Clamp



l CLAMP Filed July 6, 1926 EI. J. BILLSTROM May 22, 1928.

Patented 'May 22, 1928.

UNITED STATES j 1,670,297 PATENT OFFICE.

` i i EDWIN` J. BILLSTBOM, or nocmonn. ILLINOIS.

4 ECLAMP.

Application mea July s,

This invention relates yto clampsxsuch asA l any particular job being `handled and for" the screw-threading `adjustment of `the one jaw relative to the other to clamp the work after the jaws havebeen positioned.

Another object is to provide a clamp having double-acting jaws, as just referred to, j wherein the 'outer jaw is capable of being setto any position of fixed adjustment in Vrelation to the adjustable, movable inner jaw to confine work of any particular breadth between the jaws, the two jaws being adjustable together,A asvstated before,wto properly position the same and the innerjaw being adjustable towardt'he outer jaw to clamp the j work. The adjusting `of the outer jaw, 135 which is fixed or stationary once Vit is set, may be made in Steps determined by" the spacing of openings in a rod relative to j which the jaw is arranged to be set. Any position `intermediate a setting of the jaw Jat either of` two vsucceeding openings in the rod is arranged to be secured bythe sliding i adjustment bodily of the two jaws with the rod and relative to a supporting barthereby permitting the precise setting of the jaws to 255 accommodate the work.

y L The invention is illustrated inthe accompanying drawing wherein-L-` Fig. 1 is a side view, partly brokenaway, of a "bar clamp embodying the present im-- proveniente; and

j Fig. 2 is an enlarged longitudinal vertical section through theouter end thereof to convey a clear understanding of theadjustable head or stock member `and parts connected j l therewith.

The clamp of the present invention comprises abar 5' arranged for support in the usual manner on rods' 6 and 7 of a glue clamp `fcarrier. Thesupporting bracket 8 Vfixed between the side members 9 of the bar 5 is arranged to be slidablealong the rods on bearings 1() a manner well known in the art, there being an adjustable wing nut 11 for keeping the clamp'with its bracket as' i; sembled on the machine. The mounting de-` scribedn permits adjustment of the clamp 1926. Serial No. 120,629.

bodilyfrom side lto side relative to the machine. According to the present invention a pair of clamping jaws 12 and 13,` generally of a` conventional form are arranged for adjustment bodily in and out relative tothe carrier onthe bar 5 `to accommodate any particular job that may n be encountered.

That is, occasionally the stock to be clamped varies in width at different places along the length thereof; `The Vmatter of clamping such work with the ordinaryitype of clamp became a quite involved one and certain 4jobs could not be handled. Byvirtue of the pres-` ent invention, however, the outerjaw 12 `may bel moved inwardly and set in any desired position of fixed adjustment next to the work and the inner jaw 13 can also be adjusted outwardly to the other side of the `work to position the jaws for clamping. Any slight .variation desired in the positioning of the fixed jaw 12 is thereupon secured by adjusting the two jaws bodily in 4a manner hereinafter set-forth. The first and principal adjustment is a coarse one while the lastadjustment is a relatively line one. This will appear more clearly hereinafter.

The jaws 12 and 13 are movable with or in relation to a head lorstock member 14 which is mounted for limited adjustment lengthwiserelative to the bar 5. As shown in Fig. 2 the side members 9 of the bar 5 are joined at the outer ends thereof by a web 15. The latteris provided ywith a slot 16 extending lengthwise relative tothe bar 5. "A flat-sided lug 17 depending fromthe' lhead 14 is received inthe slot 16 to guide and limit the movement of the head. The cap screw 18 and washer 19 keep the head assembled on the bar but permit fairly free sliding of the head relative to the bar. A rod 2() is fixed to the head 14 as by'means of rivets 21 or the like and extends lengthwise of the bar 5 centrally between the side mem- Vbers 9. A plurality of regularly spaced "openings 22 are provided in the rod 20 for determining the setting of the fixed jaw 12 `-Vat different positions lengthwise relative-` to the bar. A stud 23 threading into the jaw Al2 is arranged for selective engagement in any one of the openings 22. Assuming for example, that the jaw 12 hasl been advanced to one side of the work but by reason of the spacing of the openings 22 it is'otherwise impossible to position the jaw in engagement with the work the head'llimay be moved. one way or another to secure the`detively into any one of the series of regularly spaced slots or openings 26 in a rod'27 extending lengthwise of the barl centrally between the side members 9. The rod 27 is preferably guided 'for movement in an opening 28 provided in a` lug 29 projecting from beneath the rod and is fixed as by means l.

of rivets 30 to the inner end of a screw 31. ,The latter is arranged to be given translational movement y,endwise by the turning of a nut 32 with a handle 33. The nut 32 is engaged in a socket 34 provided in the outer end of the head r14 and is held against movement outwardly relative tothe' head y,by means of a yoke 35 when, for example,

thejaw 13 is being moved inwardly away from the jaw 12.

Itlwill be clearfrom the foregoingdescription that I have provided a clampof an extremely simpleand thoroughly practical construction` aiiording ya wide range of adjustability; for the jaws to accommodate practically any job that may be encountered.

The provision otelamps of this character on a .glue clamp carrier will. obviously greatly increase the range of work that may be handled thereby.

It is believed that the foregoing description conveys 'a clearl understanding of the.

invention and of its purposes and advantages `so that anyone skilled in the art to which theinvention relates will appreciate the possible applications thereof. j

IV claim: l 1. In a device of the ,character described,

e the combination with'a support, such as a partof a glue clamp carrier, of a clamp bar mounted on said support, a jaw carrier adjustably mounted on said bar for movement toward and away from said support, a pair of jaws on said carrier, one ot said jaws being movable to different positions relative to the other jawy to get the work positioned between the jaws and the one jaw being adjustable toward and away 4from the other f jaw to permit `clamping the work therebetween, and screw means for operating said jaw. y e

2. In a device of the character described, the combination with a support, such as a part of a glue clamp carrier, of a vclamp bar mounted on said support, a jaw carrier adjustably mounted on said bar for movement toward and away from said support, a pair f of jaws on said carrier, both of said jaws being carrier to get the work positioned therebemovable toditierent positions on they tween, and the one jaw being adjustable toward and away from the other jaw to permit clamping the work therebetween, and screw means for-operating said jaw.

3. In a device ot the character described, the combination with a support, such as a part of a glue `clamp carrier, ot a clamp bar mounted on said support and extending outwardly therefrom, said bar comprising a stock member adjustable lengthwise ,with respect to said bar in and out with respect to said supporting carrier, and clamping jaws ymovable with said stock member and adjustable relative to each other thereon.

4. In a device as set forthjin claim 3, the provision of a mounting for said bar on said support permitting the adjustment sidewise of said bar with respect to saidsupport to correspondingly position said jaws whereby said jaws may be positioned at any point in and out and laterally relative to said, support.

5. In a clam the combination with a bar, of a pair o jaws :therefor to oppositely lengthwise relative to saidbar to move the two jaws simultaneously and in one d irection and through'the same distance tp diier ent positionsof adjustment lengthwise rela tiveto said bar. i f

6; In a clamp, the combination with a bar, of jaws on said bar for clamping work therebetween and `a stock member adjustably mounted on said bar and-providing means furthe adjustment of said jaws relative to each otherwhereby to move both of said jaws alike amount Vand in the .same direction uponl theV adjustment off.A said stock member.` g e, 'v

7.In aclamp, the combination: of a bar, an inner and an outer yjaw thereon for clamping worktherebetween, a means` having said jaws mounted thereon arranged 'for adjustment lengthwise relative to said bar, one Yof said jaws being arranged for fixed position with respect to said mounting, Qand f means on said mounting foradjusting the other jaw toward andaway `from, the last mentioned jaw. l 3- 8. In a clamp, the combination of a bar, a head movably mounted on said bar yfor adjustment relative thereto, a fixed jaw carried by said head to move therewith, and an adjustable jaw movable toward and away fromv the fixed 'jaw and movable with ythe head in its adjustment, andkmeans for` operating said last mentioned jaw.

9. In a clamp, the combination o f a bar, a head mounted thereon for adjustment lengthwiserelative thereto, a fixed jaw car- `I`ed by said headto move therewith, means lengthwise relatively tosaid har, an adjustable jaw, the latter being movable with the head in its adjustment, and an operating connect-ion between said adjustable jaw and said head for moving said jaw relative to the fixed jaw.

10. In adamp. the combination of a bar, a head mounted thereon, a rod fixed on said head and extending lengthwise relative to said bar and provided withV a plurality of spaced openings therein, a clamping jaw having a part to be selectively engaged in any one of said openings whereby to ixedly position said jaw relative to said head. a second rod extending lengthwiserelative to said bar having a plurality of spaced openings therein, a second clamping jaw having a part `for selective engagement in any one of said openings` and means for adjusting said second rod lengthwise relative to said bar in relation to said head.

11. In a clamp, the combination of a bar,

a head adjustably mounted thereon and guided for limited movement lengthwise relative thereto, a rod fixed relative to said head to move therewith and having a plu rality of openings therein spaced lengthwise relative to said bar, a clamping jaw having a part arranged to be selectively engaged in any one of said openings to fixedly position the jaw relative to said head, a secj j ond rod provided with a plurality of openfor selective engagement in any one of said last-mentioned openings to determine its initial position before adjustment of said second rod relative to said head.

In witness of the foregoing I ailix nature.

EDWIN J BILLSTROM.

my Sie 

